盘根问底 pán gēn wèn dǐ

DEFINITIONS

  1. lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

CHARACTERS

盘 pán
HSK 3
tray, plate, dish; examine
根 gēn
HSK 3
root, base(d on); foundation
问 wèn
HSK 2
ask about, inquire after
底 dǐ
HSK 4
bottom, underneath, underside